Vol. I] STEWART— BOTANY OF THE GALAPAGOS ISLANDS 81 



FATiGABLE IsL. : AndeTssofi. James Isl. : Darwin. Nar- 

 BOROUGH Isl. : north side, common on lava beds. Seymour 

 IsL.^ SOUTH : Snodgrass and Heller. Widely distributed. • 



Var. anacanthus Rob. (1), 157. — Albemarle Isl.: Tagus 

 Cove, common in tufaceous soil on the tops and sides of the 

 hills surrounding the cove (no. 1730). Endemic. 



T. sericeus Anderss. (1), 245, (2), 107; Rob. (1), 157.— 

 Charles Isl. : occasional among rocks along the shore (no. 

 1732). Chatham IsL. : Andersson. Endemic. 



T. sp. Rob. (1), 157. — Culpepper Isl.: sterile specimens, 

 evidently of the same species as those collected by Snodgrass 

 and Heller at this place, were found by F. X. Williams, (no. 

 1731). 



RUTACEAE 

 Zanthoxylum L. 



Z. Fagara (L.) Sarg. Card. & For. III. 186 (1890). Schin- 

 us Fagara L. Sp. PI. 389 (1753). Z. Pterota HBK. Nov. 

 Gen. & Sp. VI. 3 (1823); Rob. (1), 158.— Abingdon Isl.: 

 common bushes above 450 ft. ; above 1000 ft., small trees 

 which are much covered with epiphytes. In the region around 

 1650 ft. they are scattered and somewhat stunted in appear- 

 ance, (no. 1733). Albemarle Isl. : Cowley Bay, occasional 

 bushes at 600 ft., larger and more abundant above 1000 ft., 

 (no. 1734) ; Iguana Cove, common bushes, forming dense 

 thickets in places, (no. 1735) ; Tagus Cove, common bushes, 

 300-2200 ft. ; Villamil, bushes on lava near the coast, increas- 

 ing in size with the elevation until they form small forest trees 

 around 1300 ft.; above 1500 ft. they form bushes or low 

 stunted trees. A few specimens were found on the rim of the 

 crater at 3150 ft., and on the floor at 2750 ft., (no. 1737). 

 Charles Isl. : common bushes on the lower parts, small trees 

 around 1000 ft., very abundant on the leeward sides of most 

 of the craters 1000-1450 ft., (nos. 1738-1739). Chatham 

 Isl, : Wreck Bay, common bushes and small trees, 150-800 ft., 

 (no, 1740). Duncan Isl.: common bushes above 900 ft.; 

 around 1200 ft. it forms low trees, (no. 1741). Hood Isl.: 

 low trees in a very restricted area around 600 ft. where it 

 forms a belt around the top of the island (no. 1742). Inde- 

 fatigable Isl. : Academy Bay, bushes in the vicinity of the 



